Many friends of mine have a wrong idea about the eifi calling feature so i wrote down this for help to all.
Fristly to use wifi calling you need three things
1.a wifi router 2.a 4g sim (yes you need 4g sim its mandetory) of the operator which supports wifi calling (currently only jio and airtel not Vodafone Bsnl etc) 3.minimum 10% network on the sim 4.a device which'll support wifi calling by hardware note that no third party app available on play store or galaxy store do not support your device to wifi calling as this not support by software algorithms only they are **bleep** apps.
And many have the wrong idea about wifi calling that its like phones hotspot connected and use to call but its not actually like it your phone couldn't give any other phone to use call you can use (if you are using 2 or more Samsung device currently) call and text on other devices signed in to your same account.
Now come to point again if you have all the requirements then turn your router on and turn on wifi calling in your device and connect to it then call anyone. Here still a twist all the operator including jio says call freely but take a break iuc would be included(only if you call to other numbers) from your account. And if you have a daily limit of voice it would cut from the time.
Screenshot added of call and to other devices.
